Chair-base hub.



PATENTED JULY 4:, 1905.

H. W. BOLENS.

CHAIR BAflE HUB.

APPLICATION FILED JAN. 18, 1904.

3 SEEBTSSEEET 1 3 SHEBTSSHEET 2 PATENTED JULY 4, 1905 H. W. BOLENS.

CHAIR BASE HUB,

APPLIUATION FILED JAN.18,1904.

PATENTED JULY 4, 1905 1 .Wm WM NEW E 0 E U BA fi N m L H 0 GT. L

3 8HEETS-SHEET 3.

lllnirrisn hra rns Patented (l'uly 4:, 19055.,

l ta rnnr f ltrates.

SJPECZIFIGATIUN forming part of Letters Patent No. 793,980,

dated July 4, 1905.

Application il'lerl January 18, 1904. Serial No. 189.462.

To (1,17 71/71/0711 it may concern.-

lle it known that l, Henry \V. l loliuus, a citizen of the UnitedStates, and a resident of Fort \Vashington, in the county of tlzau keeand State of lVisconsin, have invented certain new and useful lniprovements in Chair-Base Hubs; and i do hereby declare that the:t'ollowing is full, clear, and exact description thereof.

My invention has for its object to provide simple, economical, strong,light, and durable chair-base hubs, said invention ,:onsisting in whatis hereinafter particularly set forth with reference to the accompanyingdrawings and subsequently claimed.

l igure 1 of the drawings rc infiesents a plan view of a chair-base hubin accordance with my invention; Fig. 2, an elevation of same, havingparts thereof broken a ay; Fig. 3, a plan view of the hub inverted Figs.4-. and 5, sectional views, respecti vel y, in d ica ted by li nes it4!; and 5 5 in the third figure; Figs. (3 and T, plan views of parts ofthe hub cut from metal. plate of si'iitablc gage; Fig. 8, a pen spectiveview of a tube that constitutes part of the hub; Fig. 9, apartlysectional elevation of a fragment of a chai1.'base having its hubin accordance with my invention, the tube element of the hub beingrevoluble and indented to provide a spline that engages a longitudinalvgroove in a screw-spindle, the adjusting-nut on the spindle being infrietional contact with a waved flange of the tube; Fig. 10, a plan viewof the chair-base fragment inverted and partly broken away; Fig. ll, ahorizontal section indicated by line 11 11 in the ninth figure, and Fig.12 an elevation of a portion of the tube having the imlentation andwaved flange.

Referring by letter to the drawings, A indicates the top of my improvedchair-base hub, the same being shown integral with. clia .n'ietricallyopposite and preferably partly concavo-convex standards B, thatalternate with similar standards (1, shown integral with the bottom l)of said. base, said top and bottoi'n and the standard extensions of thesame being cut from ductile metal plate of suitable gage. Bent-down ears7), integral with the hub-top A, are riveted to the standards U. andbent-up ears c, integral with the llHl)-l 0tt()ll'i l), are likewisecmmected to the standards l), depending llanges of said bottom servingto stitl'cn the same and brace all of the standards.

Extending through central openings in. the top and bottom of theabove-dcseribeil frame portion of the hub is a tube 1 of ductile metal,having an upper outer suspending flange c, and a lower outer flange ispreferably provided on said tube.

The standards of the luib-franu are preferably bent to ha vc outwardconvergence one with another, and in snug engagement with the spacesbetween said stainlards are the flaring ends of wooden legs F,constituting parts of the chair-base of which the hub herein set forthforms a part, these legs being held in place by screws run throughreferably countersunk apertures in the hubtop A. and in a plate (l, thisplate being provided with depressions r for the engagement of theflanges (Z aforesaid.

The centralv tube of the hub for the engagement of a spindle H, that maybe screwthreaded for vertical adjustment in a nut 1, held againstvertical displacement by any suitable means. In Figs. 1, 2, and il; isshown a ring J caught between the tubetlange c and top A of the hub,this ring being provided with an angular radial extension constituting aguard 71 designed to lap a flange i of said nut, and in Fig. 9 aset-screw j is shown in engagement with a 'ertieal lug h, fastened tothe hub-top A, this screw being adjustable to overlap the nut-flange.

Various means may be employed to check the tendency of thescrew-spiiulle to autonuitically descend, and as one means to that endthe suspending tlange c of the hulrtnbe is made to present a wavedsurface matching a similar surface of the opposing nut.

The hub-tube is shown in Fig. 9 provided with an indented rib m, thatser\ *es as a spline engaging a longitudinal groove provided in thescrew-spindle, and said tube is [n.eferably loose in the hub-frame torotate with said spindle and nut. It is also practical to provide forrotation of the screw- 1 spindle and its adjusting nut when the hub tubeis stationary in the hub-frame, and it may be found practical to omitsaid tube, the spindle in any form being then engageable with centralapertures in the top and bottom of said frame, and, if desirable, themetal of said top and bottom may be shaped to form central tubularprotuberances in which to guide said spindle.

lYhile I have shown what is probably a preferable detail construction ofthe hubframe, it is within the scope of my invention to make all thestandards of this frame inte gral with either the top or bottom of sameor in separate pieces, to be fastened at their ends to said top andbottom. It is also within the scope of my invention to provide any upperportion of the hub with waved surface to match similar surface of thespindle-zuljusting nut.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A chair-base hub in the form of a frame consisting of a top, bottom,standards and means by which the standards are fastened between the topand bottom at suitable intervals apart to serve as walls of spaces inwhich ends of chair-legs are secured.

2. A chair-base hub-frame consisting of a top, bottom, and standards,suitably connected; and a bottom plate having depressions for receptionof depending flanges with which the bottom of said frame is provided.

3. A chair-base hub in the form of a frame consisting of a top, bottom,standards and means by which the standards are fastened to the top andbottom at suitable intervals to serve as walls of spaces in which endsof chair-legs are secured; and a tube extending through said top andbottom central of the same. 7

at. A chair-base hub in the form of a frame consisting of a top bottom,standards and means by which the standards are fastened to the top andbottom at suitable intervals to serve as walls of spaces in which endsof chair-legs are secured; and means in the frame for guiding avertically adjustable spindle.

5. A chair-base hub in the form of a frame consisting of a top, bottom,standards and means by which ends of the standards are fastened to thetop and bottom at suitable intervals apart to serve as walls of spacesin which ends of chair-legs are secured; a vertical tube extendingthrough said top and bottom central of the same, and a spline in thetube.

6. A chair-base hub-frame embodying a top,bottom and standards suitablyconnected, the standards being at suitable intervals apart to serve aswalls of spaces in which ends of chair-legs are secured; and alongitudinally-indented vertical tube central of the frame.

7. A chair-base hub in the form of a frame consisting of a top, bottom,standards and means by which ends of the standards are fastened to thetop and bottom at suitable intervals apart to serve as walls of spacesin which ends of chair-legs are secured; a tube loose in said top andbottom central of the same, and a spline in the tube.

8. A chair-base hub in the form of a frame consisting of a top on whichwaved surface is provided in opposition to similar surface of a nut, abottom, standards and means by which the standards are fastened to saidtop and bottom at suitable intervals apart to serve as walls of spacesin which ends of chair-legs are secured.

9. A chair-base hub in the form of a frame consisting of a top, bottom,standards and means by which the standards are fastened between the topand bottom at suitable intervals apart to serve as walls of spaces inwhich chair-legs are secured; and a nutguard provided on the frame.

10. A chair-base hub-frame comprising a top having diametricallyopposite standard extensions integral therewith, and a bottom integralwith standard extensions similar to those aforesaid with which theyalternate, the standard extensions of the top being fastened to thebottom and those of said bottom to said top.

11. A chair-base hub comprising a frame consisting of a top havingstandard extensions, and a bottom having like extensions alternatingwith those aforesaid, the standard extensions of the top being fastenedto the bottom and those of said bottom to said top; and a vertical tubein the frame central of the same.

12. A chair-base hub comprising a frame consisting of a top havingstandard extensions, and a bottom having like extensions alternatingwith those aforesaid, the standard extensions of the top being fastenedto the bottom and those of said bottom to said top; and a vertical tubethat is central of the frame and provided with an upper waved surface.

13. A chair-base hub comprising a frame consisting of a top havingstandard extensions, and a bottom having like extensions alternatingwith those aforesaid, the standard extensions of the top being fastenedto those of the bottom and said bottom to said top; and a spline in thehub.

1%. A chair-base hub comprising a frame consisting of a top havingstandard extensions, and a bottom having like extensions alternatingwith those aforesaid, the standard extensions of the top being fastenedto the bottom and those of said bottom to said "rowan top; and avertical tube that is central of the frame and provided with anindentation in the direction of its length.

15. A chair-base hub comprising a frame consisting of a top havingstandard extensions, and a bottom having like extensions alternatingwith those aforesaid, the stand ard extensions of the top being fastenedto the bottom and those of said bottom to said top; and a vertical tubethat is loose in the frame central of the same and provided with aspline.

16. A chair-base hub comprising a frame consisting of a top havingstandard extensions and a bottom having like extensions alternating withthose aforesaid and provided with depending stiffening flanges arrangedto brace all the standards, the standard extensions of the top beingfastened to the bottom and. those of said bottom to said top,

1.7. A chair-base hub comprising a frame consisting ol a top havingstandard. extensions and a bottom having like extensions alternatingwith those aforesaid, the stand ard extensions of the top beingfastened. to the bottom and those of said bottom to said top; and anut-guard in connection with said. frame.

18. A chair-base hub comprising a frame consisting of a top havingstandard extensions and depending cars, a bottom having like extensionsalternating with those aforesaid and upwardly extending ears, thestandard extensions of the top being fastened. to the ears of the bottomand those of said bottom to the ea rs of said top.

In testimony that I claim the foregoing l[ have hereunto set my hand, atltl il'imukee, in the county of l\1Iilwauli(-ie and State of W isconsin,in the presence of two witnesses.

\Vitnesses

